Coal mine air-deficient gas power generation

Do coal-fired power plants cause air pollution?

Also, the paper aims to examine how potential air pollutants (e.g., PM 2.5, SO 2, NOx, CO 2), including mercury from the coal-fired power plants, cause environmental impacts. The data synthesis shows that coal quality is the most significant factor for increasing air emissions, regardless of power plant capacity.

What causes no x emissions from coal power plants?

Emissions of NO x are mostly caused by the operation of mining equipment and blasting 14 and are, in a few extreme cases, responsible for up to 68% of total NO x emissions from coal power plants. Additional emissions are caused by uncontrolled coal fires but reliable data on these is not available 15 and, hence, is not included.

Is coal mine methane a natural gas?

Coal mine methane (CMM) with the worldwide reserves of 2.6 × 1014 m3 is one of the important unconventional natural gases. However, most of the low-concentration coal mine methane (LC-CMM, cCH4 < 3...

How can coal mine ventilation air methane reduce the environmental impact?

In order to minimise the volume and environmental impact of coal mining wastes and coal processing by-products (as well as coal mine ventilation air methane, or VAM) while producing clean electric power, a new process concept, as illustrated in Fig. 7, has been proposed .

How much mercury is emitted by coal-fuelled power generation?

Liu et al. (2018) statistically analysed that the coal-fuelled power generation unit sizes ≥ 600 MW with the capacity of 422 GW emitted 24 tons of mercury. In comparison, ≤ 300 MW size with a total of 204GW emitted 23 tons of mercury.

How much anthropogenic methane is emitted from coal mines?

In addition to safety concerns, methane that is emitted from domestic and international coal mines represents approximately 8% of the world's anthropogenic methane emissions contributing 17% to the total anthropogenic greenhouse gas emissions ( U.S. EPA, 2003, U.S. EPA, 2010a ).